I have a little problem linked to my previous not problem any more...
So my graphic interface made with Tkinter launches a script that communicates his log strings to the inferface to control what is happening...
I can print with no problem theses string on the standard output, but i cannot print theses strings on a text box in the interface, everthing goes as if it were "frozen" and waits for the end of the script...
I tried several ways to launch the script, the popen method and the spawn with the os.P_NOWAIT method, but they don't seem to work. If I use the os.system method the connection to the socket is refused...

Here's a piece of my script to judge it:

    P = os.spawnv(os.P_NOWAIT,'/home/winwin/stage/maj_pdb.py',['maj_pdb.py'])

    conn, addr = s.accept()
    data = "debut"
    while data != "end of prog":
        data = conn.recv(1024)
        print data
If you have an idea I would be very grateful... thanks